NOTE: The images in this document may differ from your computer
depending on the configuration you ordered.
Before you begin
1 Save and close all open files and exit all open applications.
2 Shut down your computer.
The shut-down instruction varies depending on the operating system installed on
your computer.
– Windows 10: Click Start → Power → Shut down.
– Windows 8.1: On the Start screen, click the power icon → Shut down.
– Windows 7: Click Start → Shut down.
NOTE: If you are using a different operating system, see the
documentation of your operating system for shut-down instructions.
3 Disconnect your computer and all attached devices from their electrical outlets.
4 Disconnect all attached network devices and peripherals, such as keyboard,
mouse, and monitor from your computer.
5 Remove any media card and optical disc from your computer, if applicable.
6 After the computer is unplugged, press and hold the power button for 5 seconds
to ground the system board.
Safety instructions
Use the following safety guidelines to protect your computer from potential damage
and ensure your personal safety.
11
WARNING: Before working inside your computer, read the safety
information that shipped with your computer. For more safety best
practices, see the Regulatory Compliance home page at www.dell.com/
regulatory_compliance.
WARNING: Disconnect all power sources before opening the computer
cover or panels. After you finish working inside the computer, replace all
covers, panels, and screws before connecting to the electrical outlet.
CAUTION: To avoid damaging the computer, ensure that the work surface
is flat and clean.
CAUTION: To avoid damaging the components and cards, handle them by
their edges, and avoid touching pins and contacts.
CAUTION: You should only perform troubleshooting and repairs as
authorized or directed by the Dell technical assistance team. Damage due to
servicing that is not authorized by Dell is not covered by your warranty. See
the safety instructions that shipped with the product or at www.dell.com/
regulatory_compliance.
CAUTION: Before touching anything inside your computer, ground yourself
by touching an unpainted metal surface, such as the metal at the back of
the computer. While you work, periodically touch an unpainted metal
surface to dissipate static electricity, which could harm internal
components.
CAUTION: When you disconnect a cable, pull on its connector or on its pull
tab, not on the cable itself. Some cables have connectors with locking tabs
or thumb-screws that you must disengage before disconnecting the cable.
When disconnecting cables, keep them evenly aligned to avoid bending any
connector pins. When connecting cables, ensure that the ports and
connectors are correctly oriented and aligned.
CAUTION: Press and eject any installed card from the media-card reader.
Recommended tools
The procedures in this document may require the following tools:
•Philips screwdriver
12
•Flat-head screwdriver
•Plastic scribe
13
After working inside your
computer
CAUTION: Leaving stray or loose screws inside your computer may severely
damage your computer.
1 Replace all screws and ensure that no stray screws remain inside your computer.
2 Connect any external devices, peripherals, or cables you removed before
working on your computer.
3 Replace any media cards, discs, or any other parts that you removed before
working on your computer.
4 Connect your computer and all attached devices to their electrical outlets.
5 Turn on your computer.
14
Technical overview
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in Before
working inside your computer. After working inside your computer, follow
the instructions in After working inside your computer. For more safety best
practices, see the Regulatory Compliance home page at
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in Before
working inside your computer. After working inside your computer, follow
the instructions in After working inside your computer. For more safety best
practices, see the Regulatory Compliance home page at
regulatory_compliance.
Procedure
1 Lay the computer on its side with the computer cover facing up.
2 Remove the thumbscrew that secures the computer cover to the chassis, using
a screw driver if necessary.
3 Release the computer cover by sliding it away from the front of the computer.
4 Lift the cover away from the computer and set it aside.
www.dell.com/
18
1thumbscrew2computer cover
Replacing the computer cover
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in Before
working inside your computer. After working inside your computer, follow
the instructions in After working inside your computer. For more safety best
practices, see the Regulatory Compliance home page at
regulatory_compliance.
Procedure
1 Ensure that no tools or extra parts are left inside the computer.
2 Align the tabs at the bottom of the computer cover with the slots located along
the edge of the chassis.
3 Press the computer cover down and slide it towards the front of the computer.
4 Replace the thumbscrew that secures the computer cover to the chassis.
5 Place the computer in an upright position.
Post-requisites
Follow the instructions in “After working inside your computer”.
www.dell.com/
19
Removing the memory modules
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in Before
working inside your computer. After working inside your computer, follow
the instructions in After working inside your computer. For more safety best
practices, see the Regulatory Compliance home page at
regulatory_compliance.
Prerequisites
Remove the computer cover.
Procedure
1 Locate the memory-module slot on the system board.
For more information, see “System-board components”.
2 Press out the securing clip at each end of the memory-module slot.
NOTE: If the memory module is difficult to remove, gently ease the
memory module back and forth to remove it from the slot.
www.dell.com/
20
3 Remove the memory module out of the memory-module slot.
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in Before
working inside your computer. After working inside your computer, follow
the instructions in After working inside your computer. For more safety best
practices, see the Regulatory Compliance home page at
regulatory_compliance.
Prerequisites
Remove the computer cover.
Procedure
1 Disconnect the chassis-fan cable from the system board.
For more information, see “System-board components”.
2 Remove the screws that secure the chassis fan to the chassis.
www.dell.com/
24
3 Slide and lift the chassis fan off the computer.
1screws (4)2chassis fan
3chassis-fan cable
25
Replacing the chassis fan
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in Before
working inside your computer. After working inside your computer, follow
the instructions in After working inside your computer. For more safety best
practices, see the Regulatory Compliance home page at
regulatory_compliance.
Procedure
1 Align the screw holes on the chassis fan with the screw holes on the chassis.
2 Replace the screws that secure the chassis fan to the chassis.
3 Connect the chassis-fan cable to the system board.
Post-requisites
Replace the computer cover.
www.dell.com/
26
Removing the front bezel
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in Before
working inside your computer. After working inside your computer, follow
the instructions in After working inside your computer. For more safety best
practices, see the Regulatory Compliance home page at
regulatory_compliance.
Prerequisites
Remove the computer cover.
Procedure
1 Place the computer in an upright position.
2 Release the front-bezel tabs sequentially from the top, one at a time by moving
them away from the front panel.
www.dell.com/
27
3 Rotate and pull the front bezel away from the front of the computer to release
the front-bezel clamps from the front-panel slots.
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in Before
working inside your computer. After working inside your computer, follow
the instructions in After working inside your computer. For more safety best
practices, see the Regulatory Compliance home page at
regulatory_compliance.
Procedure
1 Align and insert the front-bezel clamps into the front-panel slots.
2 Rotate the front bezel towards the computer until the front-bezel tabs snap into
place.
Post-requisites
Replace the computer cover.
www.dell.com/
29
Removing the graphics-card
bracket (optional)
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in Before
working inside your computer. After working inside your computer, follow
the instructions in After working inside your computer. For more safety best
practices, see the Regulatory Compliance home page at
regulatory_compliance.
Prerequisites
Remove the computer cover.
Procedure
1 Remove the screws that secure the graphics-card bracket to the chassis.
www.dell.com/
30
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